Global Patent Index - EP 1219658 A4

EP 1219658 A4 2002-11-13 - POLYOXYTETRAMETHYLENE GLYCOL AND PROCESS FOR PRODUCING THE SAME

Title (en)

POLYOXYTETRAMETHYLENE GLYCOL AND PROCESS FOR PRODUCING THE SAME

Title (de)

POLYOXYTETRAMETHYLENGLYKOL UND VERFAHREN ZU SEINER HERSTELLUNG

Title (fr)

POLYOXYTETRAMETHYLENE-GLYCOL ET PROCEDE DE PRODUCTION DE CE COMPOSE

Publication

EP 1219658 A4 (EN)

Application

EP 00953515 A

Priority

  • JP 0005562 W
  • JP 23301199 A

Abstract (en)

[origin: EP1219658A1] Disclosed is a high heat resistance and low viscosity polyoxytetramethylene glycol (PTMG) having the following characteristics (1) to (4): (1) a number average molecular weight of from 500 to 3000; (2) a molecular weight distribution of 1.8 or less in terms of the Mw/Mn ratio; (3) a content of high molecular weight PTMG molecules of from 2 to 5 % by weight, wherein the high molecular weight PTMG molecules are PTMG molecules having molecular weights which are at least six times as large as the number average molecular weight of all PTMG molecules; and (4) a heteropolyacid content of from 10 to 900 ppb by weight. <IMAGE>

IPC 1-7 (main, further and additional classification)

C08G 65/20; C08G 65/26

IPC 8 full level (invention and additional information)

C08L 71/02 (2006.01); C08G 18/48 (2006.01); C08G 63/16 (2006.01); C08G 65/20 (2006.01); C08G 65/26 (2006.01); C08G 65/30 (2006.01); C08K 3/24 (2006.01)

CPC (invention and additional information)

C08G 65/30 (2013.01); C08G 65/20 (2013.01); C08G 65/2666 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

EP 1219658 A1 20020703; EP 1219658 A4 20021113; EP 1219658 B1 20060111; AT 315601 T 20060215; AU 6596900 A 20010319; BR 0013380 A 20020507; BR 0013380 B1 20101130; CA 2376397 A1 20010301; CA 2376397 C 20040914; CN 1164645 C 20040901; CN 1368990 A 20020911; DE 60025497 D1 20060406; DE 60025497 T2 20060921; ES 2251399 T3 20060501; JP 2005097325 A 20050414; JP 4194011 B2 20081210; MX PA02001443 A 20030721; TR 200200451 T2 20020923; TW 555784 B 20031001; US 6570041 B1 20030527; WO 0114455 A1 20010301

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